The assistant would mix toxic photographic chemicals and pour them on a clean glass plate. After the chemicals were given time to evaporate, the glass plate would be sensitized by being immersed – in darkness – in a bath solution. Finally, once placed in the camera, which had already been focused and positioned by the photographer, the photographer would quickly “expose” the plate towards the subject that he is photographing and then quickly rush to the darkroom wagon for developing. Each fragile glass plate had to be treated with great care after development – a difficult task on a highly mobile and often primitive battlefield many miles away from the closest photography studio.
While photography of the 1860's would seem primitive by the technological standards of today, many of the famous Civil War photographers of the day were producing sophisticated three-dimensional images or "stereo views" These stereo view images proved to be extremely popular among Americans and a highly effective medium for displaying life-like images.